SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (5): 1064-1070.DOI: 10.1016/j.cjche.2018.02.019

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Catalyst-free and solvent-free oxidation of cycloalkanes (C5-C8) with molecular oxygen: Determination of autoxidation temperature and product distribution

Haimin Shen, Yan Wang, Jinhui Deng, Long Zhang, Yuanbin She   

  1. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • 收稿日期:2017-10-26 修回日期:2018-01-20 出版日期:2018-05-28 发布日期:2018-06-29
  • 通讯作者: Yuanbin She,E-mail address:haimshen@zjut.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (Grant No. 21476270, 21306176, 21776259, 21276006) and Scientific Research Launching Foundation of Zhejiang University of Technology (Grant No. G2817101103).

Catalyst-free and solvent-free oxidation of cycloalkanes (C5-C8) with molecular oxygen: Determination of autoxidation temperature and product distribution

Haimin Shen, Yan Wang, Jinhui Deng, Long Zhang, Yuanbin She   

  1. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2017-10-26 Revised:2018-01-20 Online:2018-05-28 Published:2018-06-29
  • Contact: Yuanbin She,E-mail address:haimshen@zjut.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (Grant No. 21476270, 21306176, 21776259, 21276006) and Scientific Research Launching Foundation of Zhejiang University of Technology (Grant No. G2817101103).

摘要: Autoxidation of cycloalkanes (C5-C8) with molecular oxygen under catalyst-free and solvent-free conditions was conducted systematically for the first time, focusing on the autoxidation temperature and product distribution. The autoxidation of cyclopentane, cyclohexane, cycloheptane and cyclooctane occurs at 120℃, 130℃, 120℃, and 105℃ respectively, with obvious oxidized products formation. At 140℃, 145℃, 130℃ and 125℃, acceptable yields of the oxidized products could be obtained for them, and the oxidized product distributions were investigated in detail. The autoxidation of cycloalkanes follows the pseudo-first-order kinetic model and the apparent activation energies (Ea) for the autoxidation of cyclopentane and cyclohexane are 159.76 kJ·mol-1 and 86.75 kJ·mol-1 respectively. This study can act as an important reference in screen of suitable reaction temperature and comparison of the performance of various catalysts in the catalytic oxidation of cycloalkanes in the attempt to enhance the oxidized product selectivity.

关键词: Cycloalkane, Oxidation, Autoxidation temperature, Product distribution

Abstract: Autoxidation of cycloalkanes (C5-C8) with molecular oxygen under catalyst-free and solvent-free conditions was conducted systematically for the first time, focusing on the autoxidation temperature and product distribution. The autoxidation of cyclopentane, cyclohexane, cycloheptane and cyclooctane occurs at 120℃, 130℃, 120℃, and 105℃ respectively, with obvious oxidized products formation. At 140℃, 145℃, 130℃ and 125℃, acceptable yields of the oxidized products could be obtained for them, and the oxidized product distributions were investigated in detail. The autoxidation of cycloalkanes follows the pseudo-first-order kinetic model and the apparent activation energies (Ea) for the autoxidation of cyclopentane and cyclohexane are 159.76 kJ·mol-1 and 86.75 kJ·mol-1 respectively. This study can act as an important reference in screen of suitable reaction temperature and comparison of the performance of various catalysts in the catalytic oxidation of cycloalkanes in the attempt to enhance the oxidized product selectivity.

Key words: Cycloalkane, Oxidation, Autoxidation temperature, Product distribution